The roughest thing I ever said to an umpire was, 'Are you sure?'

An otherwise happily married couple may turn a mixed doubles game into a scene from Who's Afraid of Virginia Woolf.

The roughest thing I ever said to an umpire was, 'Are you sure?'

I often surprise myself. You can't plan some shots that go in, not unless you're on marijuana, and the only grass I'm partial to is Wimbledon's.

Roger Federer certainly is my claim to be the best of all time - if there is such a thing. With Rafael Nadal not far behind.

I like to let my racket do the talking.

When you have the opportunity, you strike.